---

yaml --- r: 181089 b: refs/heads/master c: a6198a2 h: refs/heads/master i: 181087: ccde265 v: v3
git-mirror · Jan 15, 2010 · 0b10801 · 0b10801
1 parent 5688923
commit 0b10801
Show file tree

Hide file tree

Showing 2 changed files with 12 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a09d2831b3457a92a58d67bddfed370516acfe28
+refs/heads/master: a6198a238baceae9d4e0ce3915f6d239c89b5c08
diff --git a/trunk/arch/sh/mm/cache.c b/trunk/arch/sh/mm/cache.c
@@ -2,7 +2,7 @@
  * arch/sh/mm/cache.c
  *
  * Copyright (C) 1999, 2000, 2002  Niibe Yutaka
- * Copyright (C) 2002 - 2009  Paul Mundt
+ * Copyright (C) 2002 - 2010  Paul Mundt
  *
  * Released under the terms of the GNU GPL v2.0.
  */
@@ -41,8 +41,17 @@ static inline void cacheop_on_each_cpu(void (*func) (void *info), void *info,
                                    int wait)
 {
 	preempt_disable();
-	smp_call_function(func, info, wait);
+
+	/*
+	 * It's possible that this gets called early on when IRQs are
+	 * still disabled due to ioremapping by the boot CPU, so don't
+	 * even attempt IPIs unless there are other CPUs online.
+	 */
+	if (num_online_cpus() > 1)
+		smp_call_function(func, info, wait);
+
 	func(info);
+
 	preempt_enable();
 }